Turret for engine lathes



Nov. 30, 1943. J. VITALE TURRET FOR ENGINE LATHES Filed Oct. 19, 1942 2 Sheets-Sheet 1 Nov. 30, 1943. vn- 2,335,712

' I TURRET FOR ENGINE LATHES Filed Oct. 19, 1942 2 Sheets-Sheet 2 Ml mlln' INVENTOR.

fisepk Wlf l Patented Nov. 30, 1943 UNITED STATES PATENT OFFICE TURRET-FORENGINE LATHES I .l'oseph vitale, Brooklyn, N. Application October 19, 1942," Serial No. 462,456

. z claims. (c1. 29 -48) This invention relates -to new and use'ful'improvements in a turret for enginelathes.

More particularly, the invention contemplates the construction of an engine lathe turretwhich is characterized by a tool holding turret body of any number of sides, such as four" sides, eight sides, etc., and novel means for holding said turret in various turned positions.

More particularly, the invention I proposes to I characterize the holding means by a pin project ing from the top of a holding member and selectively engageable in one of a plurality of complementary openings formed in the tool holding turret body.

Still further the invention proposes the provision of a tongue projecting from the turret body and engageable selectively with vertical grooves formed in the holding member.

' The invention further proposes the provision of a spring for lifting the turret body to separate it from the holding member. A clamp handle is also proposed for clamping the turret body down.

For further comprehension of the invention, and of the objects and advantages thereof, reference will be had to the following description and accompanying drawings, and to the appended claims in which the various novel features of the invention are more particularly set forth.

In the accompanying drawings forming a material part of this disclosure:

Fig. 1 is a side elevational view of a lathe turret embodying this invention.

Fig. 2 is a plan view of Fig. 1.

Fig. 3 is a vertical sectional View taken on the line 33 of Fig. 1.

' Fig. 4 is a perspective view of the tool holding turret body, per se.

Fig. 5 is a perspective view of the bottom of Fig. 4.

Fig. 6 is a perspective view of the holding member of the lathe turret.

Fig. 7 is a perspective view of the bottom lock plate of the lathe turret.

Fig. 8 is a plan'view of a lathe turret constructed in accordance with a modified form of the invention.

Fig. 9 is a sectional view taken on the line 99 of Fi 8.

The engine lathe turret, in accordance with this invention, includes a bottom lock plate I!) for engaging in the cross feed ways of a lathe. A holding member I2 is attached on the lock plate II and is formed with vertical grooves I3 on its sides. Screws I 4 are used for attaching the holding member I2 to the lock plate I0. A

threaded stud "I5 is vertically mounted on the f holding member I0 centrally thereof. A hardened pin I4 projectsfrom the top of the holding member I2., A tool holding turret body I6 is turnably mounted on the stud I5 and on its bottom face is provided with niches I'I into which the said pin I4 may selectively engage.

' tofirmly' hold them in position. a 1

A tongue 22 preferably tool steel, projects from the turret body I6 and. is engageable selectively with any one of the said vertical grooves I3. This tongue is in the form of a short bar of material secured on the side of the turret body' by a screw 23. A spring 24 is coaxially mounted on the stud I5 and engages into a recess 25 in the bottom face of the body I6. This spring urges the turret body upwards. A washer 26 is engaged over the stud I5 and rests against the top of the body I6. A clamp handle 21 is threadedly engaged with the stud I5 and engages the washer 26 and is for the purpose of clamping the turret body I6 down.

The operation of the lathe turret is as follows:

The various cutting tools 20 may be mounted on the turret body I6 and securely held by the clamping screws 2|. The turret body I6 may be turned by loosening the clamp handle 21. The spring 24 then lifts the turret body I6, disengaging the pin I4 from one of the openings I1 and also disengaging the tongue 22 from one of the grooves I3. The turret body I6 may now be turned to a new position. The handle 21 is then screwed down, and first the tongue 22 is engaged in the top of one of the grooves I3 and then this guides the engagement of the pin I4 in one of the openings IT. The handle 21 is then tightly screwed down.

The lathe turret I6 is shown to have four sides, but this is only by way of illustration. It may be provided with any number of sides. In Figs. 8 and 9 a modified form of the invention is disclosed in which a lathe turret and body I6 is The construction is such that the tongue 22 may be pivoted outwards, as indicated in the dot and dash lines 22'. A spring 3| normally urges the tongue 22' inwards. In other respects this form of the invention is similar to the previous form and like parts are identified by like reference numerals.

The operation of this form of the invention is substantially identical to the prior form, except that the tongue 22 may be manually lifted laterally as permitted by its hinge 3D to be moved free from or to be engaged with one of the grooves l3. This initially guides the turret body [6' downwards and subsequently the projecting pin [4' engages a complementary opening 11. In other respects the operation is identical.

It is to be understood that in this turret device, four, eight or any other number of tools may be used.

While I have illustrated and described the preferred embodiments of my invention, it is to be understood that I do not limit myself to the precise constructions herein disclosed and the right is reserved to all changes and modifications coming within the scope of the invention as defined in the appended claims.

Having thus described my invention, what I claim as new, and desire to secure by United States Letters Patent is:

1. An engine lathe turret, comprising a bottom lock plate 'for engaging in the cross feed ways of a lathe, a holding member mounted on said lock plate and having vertical grooves in its sides, a pin extending upwards from said member, a tool holding turret body turnably and vertically slidably supported on said holding member and having niches in its bottom vface with which said pin may be selectively engagedior holding said turret body against turning when .said turret body is urged downwards onto said holding member, means for urging said turret body downwards, a tongue projecting from said turret body and selectively engageable with one of said grooves in said holding member for assisting said pin in holding said turret body against turning when urged downwards, said tongue having its top end pivotally attached to said turret body so that its bottom end may be moved radially outwards clear of the groove it engages, and resilient means urging said tongue into a position in which it engages said groove.

2. An engine lathe turret, comprising a bottom lock plate for engaging in the cross feed ways of a lathe, a holding member mounted on said lock plate and having vertical grooves in its sides, a pin extending upwards from said member, a tool holding turret body turnably and vertically slidably supported on said holding member and having niches in its bottom face with which said .pinimay .beselectively engaged for holding said turret body against turning when said turret bodyis urged downwards onto said holding member, means for urging said turret body downwards a, tongue projecting from said turret'body and selectively engageable with one of .said

groovesin said holding member for assisting said pin in holding said turret body against turning when'urged downwards, said tongue having its top-end pivotally attached to said turret body so that its bottom end may be moved radially outwardsclear of'the groove it engages, and resilient means urging said tongue into a position in which it engages said groove, comprising a leaf spring having one end attached to said turret body above said tongue and it other end depended downwards and bearing against said tongue.

JOSEPH VITALE. 

